CN104728989A - Defrosting control method of air conditioner and air conditioner carrying out defrosting control method - Google Patents
Defrosting control method of air conditioner and air conditioner carrying out defrosting control method Download PDFInfo
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- CN104728989A CN104728989A CN201310705391.2A CN201310705391A CN104728989A CN 104728989 A CN104728989 A CN 104728989A CN 201310705391 A CN201310705391 A CN 201310705391A CN 104728989 A CN104728989 A CN 104728989A
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- air
- conditioner
- compressor
- frosting
- defrosting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a defrosting control method of an air conditioner and the air conditioner carrying out the defrosting control method. The defrosting control method comprises the following steps: during the development phase, recording the compressor current value I when the defrosting operation is needed after frosting of a condenser of the air conditioner under the working condition of different indoor temperatures and outdoor temperatures, and storing the information in a controller; and recording the compressor current value II after that the frosting operation for the condenser of the air conditioner is finished under the working condition of different indoor temperatures and outdoor temperatures, and storing the information in the controller. Then, during the operational process of the air conditioner, the compressor current curve prestored by the unit is collected at real time for judging the frosting situation of the unit by combining with the changes of the indoor temperatures, the outdoor temperatures and the compressor current value, so that the frosting situation of air conditioner can be exactly detected, the defrosting operation and the defrosting stopping operation can be carried out immediately and effectively for avoiding inaccurate judgment for frosting, defrosting operation at frostless situation or the case that the defrosting operation is not carried out at the frostless situation, the comfort of air conditioner is improved and the energy source is saved.
Description
Technical field
The present invention relates to technical field of air conditioner, particularly relate to a kind of air-conditioner defrosting control method and perform the air-conditioner of this defrosting control method.
Background technology
When common heat pump air-conditioning heating runs, outdoor heat exchange actuator temperature, will frosting lower than the solidification point of water.Frost layer adds thermal resistance, reduces total exchange coefficient of the heat exchanger, and the heat transfer effect of the post-condenser that frost is tied thicker can be deteriorated, the heating effect of impair system when heating, and now system just needs to carry out defrost process.
The method of current judgement air-conditioning frosting, be all generally adopt the method for timing defrost or environmentally temperature and condenser temperature carry out judging and calculation process, draw the result of air-conditioning whether frosting.There is frosting and judge inaccurate in these methods, the situation causing frostless defrost or have frost not change sends, and reduces the comfortableness of air-conditioning, also result in energy waste simultaneously.
Therefore, existing common Defrost mode, specifically can detect air-conditioner whether frosting exactly, and carry out defrost operation timely and effectively, defrosting effect is undesirable.
Summary of the invention
Technical problem to be solved by this invention is the air-conditioner providing a kind of air-conditioner defrosting control method and perform this defrosting control method, specifically can detect air-conditioner whether frosting accurately, and carry out defrost operation timely and effectively, avoid frosting judge inaccurate, frostless and carry out defrost operation and the incomplete situation that defrosts, improve the comfortableness of air-conditioning, economize energy.
The present invention is achieved through the following technical solutions:
Air-conditioner defrosting control method, wherein, comprises air-conditioner frosting decision method as follows:
In the process that S1 runs at air conditioner heat-production, detect indoor temperature, outdoor temperature and compressor present current value It in real time;
S2 according to indoor temperature and outdoor temperature determination current working, compressor current setting value I when transferring the beginning frosting corresponding with current working that air-conditioner prestores and need defrosting;
S3 compares compressor present current value It and compressor current setting value I, as It < I, operating procedure S4; As It >=I, operating procedure S5;
S4 judges condenser frosting, then air-conditioner enters into defrosting mode;
S5 judges condenser not frosting, does not carry out defrost operation.
Further, described air-conditioner defrosting control method, also comprise air-conditioner exit defrosting decision method as follows:
A1, in the process of air-conditioner Defrost operation, detects indoor temperature, outdoor temperature and compressor present current value I1t in real time;
Corresponding with current working compressor current setting value I1 when exiting defrosting that A2 transfers that air-conditioner prestores;
A3 compares compressor present current value I1t and compressor current setting value I1, as I1t < I1, and operating procedure A4; As I1t >=I1, operating procedure A5;
A4 judges that the frosting on condenser has been removed totally, and air-conditioner exits Defrost operation pattern and enters into normal heating operation mode;
A5 judges that the frosting on condenser is not yet removed totally, proceeds defrost operation.
Perform the air-conditioner of above-mentioned air-conditioner defrosting control method, can Defrost operation be carried out, include compressor; Wherein, also comprise:
Indoor temperature detection part, for detecting indoor temperature;
Outdoor temperature detection part, for detecting outdoor temperature;
Compressor current detection part, for detecting compressor current;
Controller, includes memory unit, and described memory unit includes frosting decision data module, starts frosting for prestoring air-conditioner condenser and needs compressor current setting value I when defrosting, corresponding indoor temperature and outdoor temperature information; Described indoor temperature detection part, outdoor temperature detection part and compressor current detection part are all connected respectively with controller and transmit the data detected; Described controller is in conjunction with the change of indoor temperature, outdoor temperature and compressor present current value It, to compare compressor present current value It and compressor current setting value I, the frosting situation of controller to condenser judges, detect air-conditioner whether frosting, control the operational mode of air-conditioner.
Further, described memory unit includes and exits defrosting decision data module, for prestoring compressor current setting value I1, corresponding indoor temperature and outdoor temperature information when air-conditioner condenser exits defrosting; Described controller is in conjunction with the change of indoor temperature, outdoor temperature and compressor present current value I1t, compressor present current value I1t and compressor current setting value I1 is compared, whether controller has removed clean situation to the frosting on condenser judges, controls the operational mode of air-conditioner.
Beneficial effect of the present invention is as follows:
Air-conditioner defrosting control method of the present invention and perform the air-conditioner of this defrosting control method, in development, record under the operating mode of different indoor temperatures and outdoor temperature, air-conditioner condenser starts frosting and needs compressor current value I when defrosting, and this information is stored in the controller; Meanwhile, record under the operating mode of different indoor temperatures and outdoor temperature, the compressor current value I1 after air-conditioner condenser has defrosted, and this information is stored in the controller.Then in air-conditioner running, the compressor current curve prestored by Real-time Collection unit, the frosting situation of change to unit in conjunction with indoor temperature, outdoor temperature and compressor current value judges, air-conditioner whether frosting can be detected accurately, carry out defrost operation timely and effectively and exit defrosting, avoid frosting judge inaccurate, frostless and carry out defrost operation with or have frost situation about not changing.The compressor current value curve of development record can be stored in the EEPROM memory chip of controller with a kind of set form, for different units, only need data module corresponding in the data modification eeprom chip according to reality test, highly versatile, improve the comfortableness of air-conditioning, economize energy.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of air-conditioner frosting decision method in air-conditioner defrosting control method of the present invention;
Fig. 2 is the schematic flow sheet that in air-conditioner defrosting control method of the present invention, air-conditioner exits defrosting decision method.
Detailed description of the invention
The present invention, in order to solve the problem of prior art, proposes a kind of air-conditioner defrosting control method, wherein, as shown in Figure 1, comprises air-conditioner frosting decision method as follows:
In the process that S1 runs at air conditioner heat-production, detect indoor temperature, outdoor temperature and compressor present current value It in real time;
S2 according to indoor temperature and outdoor temperature determination current working, compressor current setting value I when transferring the beginning frosting corresponding with current working that air-conditioner prestores and need defrosting;
S3 compares compressor present current value It and compressor current setting value I, as It < I, operating procedure S4; As It >=I, operating procedure S5;
S4 judges condenser frosting, then air-conditioner enters into defrosting mode;
S5 judges condenser not frosting, does not carry out defrost operation.
Wherein in an embodiment, in step S1, detect compressor present current value It in real time, the temperature value T of current outdoor temperature and setting is compared simultaneously, as the temperature value T that current outdoor temperature > sets, then judge that air-conditioner can not frosting, does not carry out defrost operation; As the temperature value T of current outdoor temperature≤setting, operating procedure S2.
Or, in step S1, real-time detection compressor present current value It, the condenser temperature value TL of current condenser temperature and setting is compared simultaneously, as the condenser temperature value TL that current condenser temperature > sets, then judge that air-conditioner can not frosting, does not carry out defrost operation; As the condenser temperature value TL of current condenser temperature≤setting, operating procedure S2.
Further, described air-conditioner frosting decision method, the acquisition methods of the compressor current setting value I corresponding with current working that air-conditioner prestores is: record in advance under the operating mode of various indoor temperature and outdoor temperature, compressor current value when air-conditioner condenser starts frosting as compressor current setting value I, and starts frosting by comprising this air-conditioner condenser and needs compressor current setting value I, indoor temperature and outdoor temperature information when defrosting to store in the controller.
Further, described air-conditioner defrosting control method, as shown in Figure 2, also comprise air-conditioner exit defrosting decision method as follows:
A1, in the process of air-conditioner Defrost operation, detects indoor temperature, outdoor temperature and compressor present current value I1t in real time;
Corresponding with current working compressor current setting value I1 when exiting defrosting that A2 transfers that air-conditioner prestores;
A3 compares compressor present current value I1t and compressor current setting value I1, as I1t < I1, and operating procedure A4; As I1t >=I1, operating procedure A5;
A4 judges that the frosting on condenser has been removed totally, and air-conditioner exits Defrost operation pattern and enters into normal heating operation mode;
A5 judges that the frosting on condenser is not yet removed totally, proceeds defrost operation.
Further, described air-conditioner exits defrosting decision method, the acquisition methods of corresponding with current working compressor current setting value I1 when exiting defrosting that air-conditioner prestores is: record in advance under the operating mode of various indoor temperature and outdoor temperature, the compressor current setting value I1, indoor temperature and the outdoor temperature information that comprise when this air-conditioner condenser exits defrosting as compressor current setting value I1 when exiting defrosting, and store in the controller by compressor current value when air-conditioner condensation frosting is removed clean.
Perform the air-conditioner of above-mentioned air-conditioner defrosting control method, can Defrost operation be carried out, include compressor; Wherein, also comprise:
Indoor temperature detection part, for detecting indoor temperature;
Outdoor temperature detection part, for detecting outdoor temperature;
Compressor current detection part, for detecting compressor current;
Controller, includes memory unit, and described memory unit includes frosting decision data module, starts frosting for prestoring air-conditioner condenser and needs compressor current setting value I when defrosting, corresponding indoor temperature and outdoor temperature information; Described indoor temperature detection part, outdoor temperature detection part and compressor current detection part are all connected respectively with controller and transmit the data detected; Described controller is in conjunction with the change of indoor temperature, outdoor temperature and compressor present current value It, to compare compressor present current value It and compressor current setting value I, the frosting situation of controller to condenser judges, detect air-conditioner whether frosting, control the operational mode of air-conditioner.
Further, described memory unit includes and exits defrosting decision data module, for prestoring compressor current setting value I1, corresponding indoor temperature and outdoor temperature information when air-conditioner condenser exits defrosting; Described controller is in conjunction with the change of indoor temperature, outdoor temperature and compressor present current value I1t, compressor present current value I1t and compressor current setting value I1 is compared, whether controller has removed clean situation to the frosting on condenser judges, controls the operational mode of air-conditioner.
Further, described memory unit is a kind of EEPROM memory chip, frosting decision data module and exit defrosting decision data module installation in EEPROM memory chip.
Embodiment:
Following table lists in air-conditioner frosting decision method, the acquisition methods record sheet of the compressor current setting value I corresponding with current working that air-conditioner prestores:
The present embodiment is a kind of novel air-conditioner defrosting control method.Because set heat exchange deleterious after frosting can cause the electric current of compressor obviously to diminish, the mode that indoor temperature, outdoor temperature, condenser temperature, compressor current therefore can be adopted to combine judges, shown in side specific as follows the frosting of unit and defrosting situation:
Enter defrosting:
1, in development, detect in real time to more than unit four parameters, record in the operating mode of different indoor temperatures and outdoor temperature, air-conditioner condenser starts frosting and needs compressor current value when defrosting.In order to reduce the data volume of experimental record, when outdoor temperature is too high or condenser temperature is too high time, can judge that unit does not have frosting certainly, first excluding a part of condition.The compressor current value curve recorded can be stored in the eeprom chip of controller with a kind of set form, for different units, only needs data corresponding in the data modification eeprom chip according to reality test.
2, when unit operation, the temperature inside and outside real-time sensing chamber and compressor present current value It, as the temperature value T of outdoor temperature > setting, judge that air-conditioner can not frosting, do not carry out defrost operation; As the temperature value T of outdoor temperature < setting, the size of the compressor current I prestored under then continuing to judge It now and current working, as It < I, then judge that condenser starts frosting and needs defrosting, then air-conditioner enters into defrosting mode; As It > I, then represent condenser not frosting, do not carry out defrost operation.
Judged by the mode adopting above four parameters to combine, air-conditioner whether frosting can be detected accurately, and carry out defrost operation timely and effectively, avoid frosting judge inaccurate, frostless and carry out defrost operation and the incomplete situation that defrosts, effectively improve the efficiency of air-conditioner, defrosting efficiency and unit comfortableness.
Exit defrosting:
1, in development, detect in real time to more than unit four parameters, record in the operating mode of different indoor temperatures and outdoor temperature, compressor current value when having defrosted is as compressor current setting value I1.The compressor current value curve recorded can be stored in the eeprom chip of controller with a kind of set form, for different units, only needs data corresponding in the data modification eeprom chip according to reality test.
2, when unit operation, the temperature inside and outside real-time sensing chamber and compressor present current value I1t, as I1t < I1, then judge that frosting completes, and can exit defrosting action and enter into normal heating operation.
Judged by the mode adopting above four parameters to combine, can detect whether air-conditioner completes defrosting accurately, avoid frostless and carry out defrost operation and the incomplete situation that defrosts, effectively improving the efficiency of air-conditioner, defrosting efficiency and unit comfortableness.
The above embodiment only have expressed embodiments of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. air-conditioner defrosting control method, is characterized in that, comprises air-conditioner frosting decision method as follows:
In the process that S1 runs at air conditioner heat-production, detect indoor temperature, outdoor temperature and compressor present current value It in real time;
S2, according to indoor temperature and outdoor temperature determination current working, transfers the beginning frosting corresponding with current working that air-conditioner prestores and needs compressor current setting value I when defrosting;
S3 compares compressor present current value It and compressor current setting value I, as It < I, operating procedure S4; As It >=I, operating procedure S5;
S4 judges condenser frosting, then air-conditioner enters into defrosting mode;
S5 judges condenser not frosting, does not carry out defrost operation.
2. air-conditioner defrosting control method according to claim 1, it is characterized in that, in step S1, real-time detection compressor present current value It, the temperature value T of current outdoor temperature and setting is compared simultaneously, as the temperature value T that current outdoor temperature > sets, then judge that air-conditioner can not frosting, does not carry out defrost operation; As the temperature value T of current outdoor temperature≤setting, operating procedure S2.
3. air-conditioner defrosting control method according to claim 1, it is characterized in that, in step S1, real-time detection compressor present current value It, the condenser temperature value TL of current condenser temperature and setting is compared simultaneously, as the condenser temperature value TL that current condenser temperature > sets, then judge that air-conditioner can not frosting, do not carry out defrost operation; As the condenser temperature value TL of current condenser temperature≤setting, operating procedure S2.
4. the air-conditioner defrosting control method according to claim 1,2 or 3, it is characterized in that, the acquisition methods of the compressor current setting value I corresponding with current working that air-conditioner prestores is: record in advance under the operating mode of various indoor temperature and outdoor temperature, air-conditioner condenser starts frosting and needs compressor current value during defrosting as compressor current setting value I, and starts frosting by comprising this air-conditioner condenser and need compressor current setting value I, indoor temperature and outdoor temperature information when defrosting to store in the controller.
5. air-conditioner defrosting control method according to claim 4, is characterized in that, also comprise air-conditioner exit defrosting decision method as follows:
A1, in the process of air-conditioner Defrost operation, detects indoor temperature, outdoor temperature and compressor present current value I1t in real time;
Corresponding with current working compressor current setting value I1 when exiting defrosting that A2 transfers that air-conditioner prestores;
A3 compares compressor present current value I1t and compressor current setting value I1, as I1t < I1, and operating procedure A4; As I1t >=I1, operating procedure A5;
A4 judges that the frosting on condenser has been removed totally, and air-conditioner exits Defrost operation pattern and enters into normal heating operation mode;
A5 judges that the frosting on condenser is not yet removed totally, proceeds defrost operation.
6. air-conditioner defrosting control method according to claim 5, it is characterized in that, the acquisition methods of corresponding with current working compressor current setting value I1 when exiting defrosting that air-conditioner prestores is: record in advance under the operating mode of various indoor temperature and outdoor temperature, the compressor current setting value I1, indoor temperature and the outdoor temperature information that comprise when this air-conditioner condenser exits defrosting as compressor current setting value I1 when exiting defrosting, and store in the controller by compressor current value when air-conditioner condensation frosting is removed clean.
7. perform the air-conditioner as air-conditioner defrosting control method as described in any one in claim 1 to 6, include compressor, air-conditioner can carry out Defrost operation; It is characterized in that, also comprise:
Indoor temperature detection part, for detecting indoor temperature;
Outdoor temperature detection part, for detecting outdoor temperature;
Compressor current detection part, for detecting compressor current;
Controller, includes memory unit, and described memory unit includes frosting decision data module, starts frosting for prestoring air-conditioner condenser and needs compressor current setting value I when defrosting, corresponding indoor temperature and outdoor temperature information; Described indoor temperature detection part, outdoor temperature detection part and compressor current detection part are all connected respectively with controller and transmit the data detected; Described controller is in conjunction with the change of indoor temperature, outdoor temperature and compressor present current value It, to compare compressor present current value It and compressor current setting value I, the frosting situation of controller to condenser judges, detect air-conditioner whether frosting, control the operational mode of air-conditioner.
8. air-conditioner according to claim 7, is characterized in that, described memory unit is a kind of EEPROM memory chip, and frosting decision data module installation is in EEPROM memory chip.
9. air-conditioner according to claim 7, it is characterized in that, described memory unit includes and exits defrosting decision data module, for prestoring compressor current setting value I1, corresponding indoor temperature and outdoor temperature information when air-conditioner condenser exits defrosting; Described controller is in conjunction with the change of indoor temperature, outdoor temperature and compressor present current value I1t, compressor present current value I1t and compressor current setting value I1 is compared, whether controller has removed clean situation to the frosting on condenser judges, controls the operational mode of air-conditioner.
10. air-conditioner according to claim 9, is characterized in that, described in exit defrosting decision data module installation in EEPROM memory chip.
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| CN105716208A (en) * | 2016-04-05 | 2016-06-29 | 广东美的制冷设备有限公司 | Working control method and device of air conditioner |
| CN107192022A (en) * | 2017-06-16 | 2017-09-22 | Tcl空调器(中山)有限公司 | Air conditioner and air-conditioner control method, device and storage medium |
| CN107422396A (en) * | 2017-07-25 | 2017-12-01 | 广东美的暖通设备有限公司 | Foreign matter detection system, foreign matter detecting method and heating and ventilating equipment |
| CN108317666A (en) * | 2018-03-06 | 2018-07-24 | 广东美的制冷设备有限公司 | Defrosting control method, device, air conditioner and computer readable storage medium |
| CN108444134A (en) * | 2018-02-14 | 2018-08-24 | 青岛海尔空调器有限总公司 | Air conditioner defrosting control method |
| CN108518805A (en) * | 2018-05-10 | 2018-09-11 | 广东美的制冷设备有限公司 | Progress control method, device, air conditioner and computer readable storage medium |
| CN110173825A (en) * | 2019-05-31 | 2019-08-27 | 广东美的制冷设备有限公司 | Progress control method, control device, air conditioner and computer readable storage medium |
| CN110631195A (en) * | 2018-06-25 | 2019-12-31 | 青岛海尔空调器有限总公司 | Defrosting control method and device for air conditioner |
| CN110631210A (en) * | 2019-09-30 | 2019-12-31 | 广东美的制冷设备有限公司 | Air conditioner, method of controlling the same, and computer-readable storage medium |
| CN111219803A (en) * | 2020-01-09 | 2020-06-02 | 珠海格力电器股份有限公司 | Multi-split air conditioner and defrosting method thereof |
| CN112393478A (en) * | 2020-11-18 | 2021-02-23 | 广东申菱环境***股份有限公司 | Defrosting control method of heat pump air conditioner |
| CN113028593A (en) * | 2021-03-30 | 2021-06-25 | 珠海格力电器股份有限公司 | Defrosting control method and device for air conditioner, storage medium and processor |
| CN117073137A (en) * | 2023-08-14 | 2023-11-17 | 重庆大学 | Defrosting method and system for air conditioner operation |
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| CN105716208B (en) * | 2016-04-05 | 2019-06-28 | 广东美的制冷设备有限公司 | The operation control method and device of air conditioner |
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| CN108518805A (en) * | 2018-05-10 | 2018-09-11 | 广东美的制冷设备有限公司 | Progress control method, device, air conditioner and computer readable storage medium |
| CN110631195A (en) * | 2018-06-25 | 2019-12-31 | 青岛海尔空调器有限总公司 | Defrosting control method and device for air conditioner |
| CN110173825A (en) * | 2019-05-31 | 2019-08-27 | 广东美的制冷设备有限公司 | Progress control method, control device, air conditioner and computer readable storage medium |
| CN110631210A (en) * | 2019-09-30 | 2019-12-31 | 广东美的制冷设备有限公司 | Air conditioner, method of controlling the same, and computer-readable storage medium |
| CN110631210B (en) * | 2019-09-30 | 2021-07-16 | 广东美的制冷设备有限公司 | Air conditioner, method of controlling the same, and computer-readable storage medium |
| CN111219803A (en) * | 2020-01-09 | 2020-06-02 | 珠海格力电器股份有限公司 | Multi-split air conditioner and defrosting method thereof |
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| CN112393478B (en) * | 2020-11-18 | 2022-06-07 | 广东申菱环境***股份有限公司 | Defrosting control method of heat pump air conditioner |
| CN113028593A (en) * | 2021-03-30 | 2021-06-25 | 珠海格力电器股份有限公司 | Defrosting control method and device for air conditioner, storage medium and processor |
| CN117073137A (en) * | 2023-08-14 | 2023-11-17 | 重庆大学 | Defrosting method and system for air conditioner operation |
| CN117073137B (en) * | 2023-08-14 | 2024-04-02 | 重庆大学 | Defrosting method and system for air conditioner operation |
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